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Topical, regional anesthesia lead to differing visual perceptions during phaco

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LONDON — Patients undergoing phacoemulsification and IOL implantation with topical anesthetic have different visual perceptions during surgery from patients undergoing the same procedure with a local anesthetic, according to a study.

Paris Tranos and colleagues here at Moorfields Eye Hospital and other institutions studied 247 patients undergoing routine phaco and IOL implantation. Of the patients, 66 were given topical anesthesia, 74 were given sub-Tenon’s anesthesia and 107 were given peribulbar anesthesia.

Those who had topical anesthesia were more aware of surgical instruments than patients in the other two groups. More patients in the topical anesthetic group had a higher perception of color as well.

The study is published in the April issue of Acta Ophthalmologica Scandinavica.